Fix jQuery.parseHTML does not recognize document

Fix #2307.

jquery/jquery-tests.ts

@@ -3114,6 +3114,9 @@ function test_parseHTML() {
 	$( "<ol></ol>" )
 	  .append( nodeNames.join( "" ) )
 	  .appendTo( $log );
+
+	// parse HTML with all parameters
+	$.parseHTML( str, document, true );
 }
 
 // http://api.jquery.com/jQuery.parseJSON/

jquery/jquery.d.ts

@@ -1252,6 +1252,15 @@ interface JQueryStatic {
      * @param keepScripts A Boolean indicating whether to include scripts passed in the HTML string
      */
     parseHTML(data: string, context?: HTMLElement, keepScripts?: boolean): any[];
+
+    /**
+     * Parses a string into an array of DOM nodes.
+     *
+     * @param data HTML string to be parsed
+     * @param context DOM element to serve as the context in which the HTML fragment will be created
+     * @param keepScripts A Boolean indicating whether to include scripts passed in the HTML string
+     */
+    parseHTML(data: string, context?: Document, keepScripts?: boolean): any[];
 }
 
 /**